Log Message:
(math/R-RPostgreSQL) Updated 0.7.5 to 0.7.7, make test passed

(inst/NEWS)
Version 0.7-7
    o Replace Calloc and Free with R_Calloc and R_Free, respectively,
    to conform STRICT.

Version 0.7-6
    o   Fix bugs found by warnings and suppress other nonsesical warnings
    o   Fix partial match warning #132
    o   exclude dropped column from column listing #130